Password Cracker: Linux - Metasploit


This page contains detailed information about how to use the auxiliary/analyze/crack_linux metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: Password Cracker: Linux
Module: auxiliary/analyze/crack_linux
Source code: modules/auxiliary/analyze/crack_linux.rb
Disclosure date: -
Last modification time: 2021-01-27 13:50:39 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module uses John the Ripper or Hashcat to identify weak passwords that have been acquired from unshadowed passwd files from Unix/Linux systems. The module will only crack MD5, BSDi and DES implementations by default. However, it can also crack Blowfish and SHA(256/512), but it is much slower.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

msf > use auxiliary/analyze/crack_linux
msf auxiliary(crack_linux) > show targets
    ... a list of targets ...
msf auxiliary(crack_linux) > set TARGET target-id
msf auxiliary(crack_linux) > show options
    ... show and set options ...
msf auxiliary(crack_linux) > exploit

Knowledge Base

Vulnerable Application

This module attempts to use a password cracker to decode Linux based password hashes, such as:

  • DES based passwords
  • MD5 based passwords
  • BSDi based passwords
  • bf, bcrypt, or blowfish based passwords
  • SHA256 based passwords
  • SHA512 based passwords
Common John Hashcat
des descript 1500
md5 md5crypt 500
bsdi bsdicrypt 12400
blowfish bcrypt 3200
sha256 sha256crypt 7400
sha512 sha512crypt 1800

Sources of hashes can be found here: source, source2

Verification Steps

  1. Have at least one user with an des, md5, bsdi, blowfish, sha512, or sha256 password hash in the database
  2. Start msfconsole
  3. Do: use auxiliary/analyze/crack_linux
  4. Do: set cracker of choice
  5. Do: run
  6. You should hopefully crack a password.

Actions

john

Use john the ripper (default).

hashcat

Use hashcat.

Options

BLOWFISH

Crack Blowfish hashes. Default is false.

BSDi

Crack BSDi hashes. Default is true.

CONFIG

The path to a John config file (JtR option: --config). Default is metasploit-framework/data/john.conf

CRACKER_PATH

The absolute path to the cracker executable. Default behavior is to search path.

CUSTOM_WORDLIST

The path to an optional custom wordlist. This file is added to the new wordlist which may include the other USE items like USE_CREDS, and have MUTATE or KORELOGIC applied to it.

DES

Crack DES hashes. Default is true.

DeleteTempFiles

This option will prevent deletion of the wordlist and file containing hashes. This may be useful for running the hashes through john if it wasn't cracked, or for debugging. Default is false.

Fork

This option will set how many forks to use on john the ripper. Default is 1 (no forking).

INCREMENTAL

Run the cracker in incremental mode. Default is true

ITERATION_TIMEOUT

The max-run-time for each iteration of cracking.

KORELOGIC

Apply the KoreLogic rules to Wordlist Mode (slower). Default is false.

MD5

Crack MD5 hashes. Default is true.

MUTATE

Apply common mutations to the Wordlist (SLOW). Mutations are:

  • '@' => 'a'
  • '0' => 'o'
  • '3' => 'e'
  • '$' => 's'
  • '7' => 't'
  • '1' => 'l'
  • '5' => 's'

Default is false.

POT

The path to a John POT file (JtR option: --pot) to use instead. The pot file is the data file which records cracked password hashes. Kali linux's default location is /root/.john/john.pot. Default is ~/.msf4/john.pot.

SHA256

Crack SHA256 hashes. Default is false.

SHA512

Crack SHA12 hashes. Default is false.

SHOWCOMMAND

Show the command being used run from the command line for debugging. Default is false

USE_CREDS

Use existing credential data saved in the database. Default is true.

USE_DB_INFO

Use looted database schema info to seed the wordlist. This includes the Database Name, each Table Name, and each Column Name. If the DB is MSSQL, the Instance Name is also used. Default is true.

USE_DEFAULT_WORDLIST

Use the default metasploit wordlist in metasploit-framework/data/wordlists/password.lst. Default is true.

USE_HOSTNAMES

Seed the wordlist with hostnames from the workspace. Default is true.

USE_ROOT_WORDS

Use the Common Root Words Wordlist in metasploit-framework/data/wordlists/common_roots.txt. Default is true.

WORDLIST

Run the cracker in dictionary/wordlist mode. Default is true

Scenarios

Sample Data

The following is data which can be used to test integration, including adding entries to a wordlist and pot file to test various aspects of the cracker.

echo "" > /root/.msf4/john.pot
echo "fakeV6xlcXxRM:55" >> /root/.msf4/john.pot
echo "\$1\$O3JMY.Tw\$AdLnLjQ/5jXF9.fakegHv/:password" >> /root/.msf4/john.pot
echo "test" > /tmp/wordlist
echo "password" >> /tmp/wordlist
echo "toto" >> /tmp/wordlist
creds add user:des2_password hash:rEK1ecacw.7.c jtr:des
creds add user:des_password hash:rEK1ecacw.7.c jtr:des
creds add user:des_55 hash:rDpJV6xlcXxRM jtr:des
creds add user:des_pot_55 hash:fakeV6xlcXxRM jtr:des
creds add user:des_passphrase hash:qiyh4XPJGsOZ2MEAyLkfWqeQ jtr:des
creds add user:md5_password hash:$1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/ jtr:md5
creds add user:md52_password hash:$1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/ jtr:md5
creds add user:md5_pot_password hash:$1$O3JMY.Tw$AdLnLjQ/5jXF9.fakegHv/ jtr:md5
creds add user:bsdi_password hash:_J9..K0AyUubDrfOgO4s jtr:bsdi
creds add user:sha256_password hash:$5$MnfsQ4iN$ZMTppKN16y/tIsUYs/obHlhdP.Os80yXhTurpBMUbA5 jtr:sha256
creds add user:sha512_password hash:$6$zWwwXKNj$gLAOoZCjcr8p/.VgV/FkGC3NX7BsXys3KHYePfuIGMNjY83dVxugPYlxVg/evpcVEJLT/rSwZcDMlVVf/bhf.1 jtr:sha512
creds add user:blowfish_password hash:$2a$05$bvIG6Nmid91Mu9RcmmWZfO5HJIMCT8riNW0hEp8f6/FuA2/mHZFpe jtr:bf

John the Ripper

We'll set ITERATION_TIMEOUT 60 for a quick crack, blowfish true, sha256 true, sha512 true to handle the bfish, sha256 and sha512 hashes, and ShowCommand true for easy debugging.

resource (hashes_hashcat.rb)> setg CUSTOM_WORDLIST /tmp/wordlist
CUSTOM_WORDLIST => /tmp/wordlist
resource (hashes_hashcat.rb)> setg ShowCommand true
ShowCommand => true
resource (hashes_hashcat.rb)> setg USE_DEFAULT_WORDLIST false
USE_DEFAULT_WORDLIST => false
resource (hashes_hashcat.rb)> setg DeleteTempFiles false
DeleteTempFiles => false
resource (hashes_hashcat.rb)> setg USE_CREDS false
USE_CREDS => false
resource (hashes_hashcat.rb)> setg USE_DB_INFO false
USE_DB_INFO => false
resource (hashes_hashcat.rb)> setg USE_HOSTNAMES false
USE_HOSTNAMES => false
resource (hashes_hashcat.rb)> setg USE_ROOT_WORDS false
USE_ROOT_WORDS => false
resource (hashes_hashcat.rb)> setg ITERATION_TIMEOUT 60
ITERATION_TIMEOUT => 60
resource (hashes_hashcat.rb)> use auxiliary/analyze/crack_linux
resource (hashes_hashcat.rb)> set blowfish true
blowfish => true
resource (hashes_hashcat.rb)> set sha256 true
sha256 => true
resource (hashes_hashcat.rb)> set sha512 true
sha512 => true
resource (hashes_hashcat.rb)> run
[+] john Version Detected: 1.9.0-jumbo-1 OMP
[*] Hashes Written out to /tmp/hashes_tmp20190531-28293-u4ihgb
[*] Wordlist file written out to /tmp/jtrtmp20190531-28293-19rhhdd
[*] Checking md5crypt hashes already cracked...
[*] Cracking md5crypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=JKDS2w8U --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=md5crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 100.0g/s 76800p/s 76800c/s 76800C/s test3:::..tere!
Warning: passwords printed above might not be all those cracked
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking md5crypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=JKDS2w8U --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=md5crypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking md5crypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=JKDS2w8U --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=md5crypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking md5crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=JKDS2w8U --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=md5crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1303   md5crypt   md5_password      password          Single
 1304   md5crypt   md52_password     password          Single
 1305   md5crypt   md5_pot_password  password          Already Cracked/POT

[*] Checking descrypt hashes already cracked...
[*] Cracking descrypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=TYlIcIco --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=descrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 100.0g/s 1102Kp/s 4410Kc/s 4410KC/s test3:::..t1900
Warning: passwords printed above might be partial and not be all those cracked
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking descrypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=TYlIcIco --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=descrypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Proceeding with single, rules:Single
Press 'q' or Ctrl-C to abort, almost any other key for status
3g 0:00:00:00 DONE 1/3 (2019-05-31 15:20) 300.0g/s 614200p/s 614400c/s 614400C/s des_pass..Dde_pass
Warning: passwords printed above might be partial
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking descrypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=TYlIcIco --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=descrypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking descrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=TYlIcIco --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=descrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1298   descrypt   des2_password     password          Single
 1299   descrypt   des_password      password          Single
 1300   descrypt   des_55            55                Normal
 1301   descrypt   des_pot_55        55                Already Cracked/POT
 1302   descrypt   des_passphrase    passphrase        Normal
 1303   md5crypt   md5_password      password          Single
 1304   md5crypt   md52_password     password          Single
 1305   md5crypt   md5_pot_password  password          Already Cracked/POT

[*] Checking bsdicrypt hashes already cracked...
[*] Cracking bsdicrypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=24lUijDR --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bsdicrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 50.00g/s 102400p/s 102400c/s 102400C/s test3:::..Tere6
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking bsdicrypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=24lUijDR --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bsdicrypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking bsdicrypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=24lUijDR --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bsdicrypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking bsdicrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=24lUijDR --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bsdicrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1298   descrypt   des2_password     password          Single
 1299   descrypt   des_password      password          Single
 1300   descrypt   des_55            55                Normal
 1301   descrypt   des_pot_55        55                Already Cracked/POT
 1302   descrypt   des_passphrase    passphrase        Normal
 1303   md5crypt   md5_password      password          Single
 1304   md5crypt   md52_password     password          Single
 1305   md5crypt   md5_pot_password  password          Already Cracked/POT
 1306   bsdicrypt  bsdi_password     password          Single

[*] Checking bcrypt hashes already cracked...
[*] Cracking bcrypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=YCMwoPbH --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bcrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 33.33g/s 2400p/s 2400c/s 2400C/s test3:::..test::0
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking bcrypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=YCMwoPbH --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bcrypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking bcrypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=YCMwoPbH --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bcrypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking bcrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=YCMwoPbH --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=bcrypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type  Username           Cracked Password  Method
 -----  ---------  --------           ----------------  ------
 1298   descrypt   des2_password      password          Single
 1299   descrypt   des_password       password          Single
 1300   descrypt   des_55             55                Normal
 1301   descrypt   des_pot_55         55                Already Cracked/POT
 1302   descrypt   des_passphrase     passphrase        Normal
 1303   md5crypt   md5_password       password          Single
 1304   md5crypt   md52_password      password          Single
 1305   md5crypt   md5_pot_password   password          Already Cracked/POT
 1306   bsdicrypt  bsdi_password      password          Single
 1309   bcrypt     blowfish_password  password          Single

[*] Checking sha256crypt hashes already cracked...
[*] Cracking sha256crypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=XVDR4pAU --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha256crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 2.173g/s 8904p/s 8904c/s 8904C/s test3:::..1foo
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking sha256crypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=XVDR4pAU --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha256crypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking sha256crypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=XVDR4pAU --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha256crypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking sha256crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=XVDR4pAU --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha256crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type    Username           Cracked Password  Method
 -----  ---------    --------           ----------------  ------
 1298   descrypt     des2_password      password          Single
 1299   descrypt     des_password       password          Single
 1300   descrypt     des_55             55                Normal
 1301   descrypt     des_pot_55         55                Already Cracked/POT
 1302   descrypt     des_passphrase     passphrase        Normal
 1303   md5crypt     md5_password       password          Single
 1304   md5crypt     md52_password      password          Single
 1305   md5crypt     md5_pot_password   password          Already Cracked/POT
 1306   bsdicrypt    bsdi_password      password          Single
 1307   sha256crypt  sha256_password    password          Single
 1309   bcrypt       blowfish_password  password          Single

[*] Checking sha512crypt hashes already cracked...
[*] Cracking sha512crypt hashes in single mode...
[*]    Cracking Command: /usr/sbin/john --session=nJBNk8dS --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha512crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=single --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
1g 0:00:00:00 DONE (2019-05-31 15:20) 4.545g/s 4654p/s 4654c/s 4654C/s test3:::..test2::k
Use the "--show" option to display all of the cracked passwords reliably
Session completed
[*] Cracking sha512crypt hashes in normal mode
[*]    Cracking Command: /usr/sbin/john --session=nJBNk8dS --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha512crypt --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking sha512crypt hashes in incremental mode...
[*]    Cracking Command: /usr/sbin/john --session=nJBNk8dS --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha512crypt --incremental=Digits --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[*] Cracking sha512crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/sbin/john --session=nJBNk8dS --nolog --config=/root/metasploit-framework/data/jtr/john.conf --pot=/root/.msf4/john.pot --format=sha512crypt --wordlist=/tmp/jtrtmp20190531-28293-19rhhdd --rules=wordlist --max-run-time=60 /tmp/hashes_tmp20190531-28293-u4ihgb
Using default input encoding: UTF-8
[+] Cracked Hashes
==============

 DB ID  Hash Type    Username           Cracked Password  Method
 -----  ---------    --------           ----------------  ------
 1298   descrypt     des2_password      password          Single
 1299   descrypt     des_password       password          Single
 1300   descrypt     des_55             55                Normal
 1301   descrypt     des_pot_55         55                Already Cracked/POT
 1302   descrypt     des_passphrase     passphrase        Normal
 1303   md5crypt     md5_password       password          Single
 1304   md5crypt     md52_password      password          Single
 1305   md5crypt     md5_pot_password   password          Already Cracked/POT
 1306   bsdicrypt    bsdi_password      password          Single
 1307   sha256crypt  sha256_password    password          Single
 1308   sha512crypt  sha512_password    password          Single
 1309   bcrypt       blowfish_password  password          Single

[*] Auxiliary module execution completed
resource (hashes_hashcat.rb)> creds
Credentials
===========

host  origin  service  public             private                                                                                             realm  private_type        JtR Format
----  ------  -------  ------             -------                                                                                             -----  ------------        ----------
                       des2_password      rEK1ecacw.7.c                                                                                              Nonreplayable hash  des
                       des_password       rEK1ecacw.7.c                                                                                              Nonreplayable hash  des
                       des_55             rDpJV6xlcXxRM                                                                                              Nonreplayable hash  des
                       des_pot_55         fakeV6xlcXxRM                                                                                              Nonreplayable hash  des
                       des_passphrase     qiyh4XPJGsOZ2MEAyLkfWqeQ                                                                                   Nonreplayable hash  des
                       md5_password       $1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/                                                                         Nonreplayable hash  md5
                       md52_password      $1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/                                                                         Nonreplayable hash  md5
                       md5_pot_password   $1$O3JMY.Tw$AdLnLjQ/5jXF9.fakegHv/                                                                         Nonreplayable hash  md5
                       bsdi_password      _J9..K0AyUubDrfOgO4s                                                                                       Nonreplayable hash  bsdi
                       sha256_password    $5$MnfsQ4iN$ZMTppKN16y/tIsUYs/obHlhdP.Os80yXhTurpBMUbA5                                                    Nonreplayable hash  sha256
                       sha512_password    $6$zWwwXKNj$gLAOoZCjcr8p/.VgV/FkGC3NX7BsXys3KHYePfuIGMNjY83dVxugPYlxVg/evpcVEJLT/rSwZcDMlVVf/bhf.1         Nonreplayable hash  sha512
                       blowfish_password  $2a$05$bvIG6Nmid91Mu9RcmmWZfO5HJIMCT8riNW0hEp8f6/FuA2/mHZFpe                                               Nonreplayable hash  bf
                       md5_pot_password   password                                                                                                   Password            
                       md5_password       password                                                                                                   Password            
                       md52_password      password                                                                                                   Password            
                       des_pot_55         55                                                                                                         Password            
                       des2_password      password                                                                                                   Password            
                       des_password       password                                                                                                   Password            
                       des_55             55                                                                                                         Password            
                       des_passphrase     passphrase                                                                                                 Password            
                       bsdi_password      password                                                                                                   Password            
                       blowfish_password  password                                                                                                   Password            
                       sha256_password    password                                                                                                   Password            
                       sha512_password    password                                                                                                   Password

Hashcat

We'll set ITERATION_TIMEOUT 60 for a quick crack, blowfish true, sha256 true, sha512 true to handle the bfish, sha256 and sha512 hashes, and ShowCommand true for easy debugging.

resource (hashes_hashcat.rb)> setg CUSTOM_WORDLIST /tmp/wordlist
CUSTOM_WORDLIST => /tmp/wordlist
resource (hashes_hashcat.rb)> setg ShowCommand true
ShowCommand => true
resource (hashes_hashcat.rb)> setg USE_DEFAULT_WORDLIST false
USE_DEFAULT_WORDLIST => false
resource (hashes_hashcat.rb)> setg DeleteTempFiles false
DeleteTempFiles => false
resource (hashes_hashcat.rb)> setg USE_CREDS false
USE_CREDS => false
resource (hashes_hashcat.rb)> setg USE_DB_INFO false
USE_DB_INFO => false
resource (hashes_hashcat.rb)> setg USE_HOSTNAMES false
USE_HOSTNAMES => false
resource (hashes_hashcat.rb)> setg USE_ROOT_WORDS false
USE_ROOT_WORDS => false
resource (hashes_hashcat.rb)> setg ITERATION_TIMEOUT 60
ITERATION_TIMEOUT => 60
resource (hashes_hashcat.rb)> use auxiliary/analyze/crack_linux
resource (hashes_hashcat.rb)> set blowfish true
blowfish => true
resource (hashes_hashcat.rb)> set sha256 true
sha256 => true
resource (hashes_hashcat.rb)> set sha512 true
sha512 => true
resource (hashes_hashcat.rb)> set action hashcat
action => hashcat
resource (hashes_hashcat.rb)> run
[+] hashcat Version Detected: v5.1.0
[*] Hashes Written out to /tmp/hashes_tmp20190531-28535-hi2lkf
[*] Wordlist file written out to /tmp/jtrtmp20190531-28535-47c707
[*] Checking md5crypt hashes already cracked...
[*] Cracking md5crypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=p5KJBBFs --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=500 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking md5crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=p5KJBBFs --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=500 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1327   md5crypt   md5_password      password          Wordlist
 1328   md5crypt   md52_password     password          Wordlist
 1329   md5crypt   md5_pot_password  password          Already Cracked/POT

[*] Checking descrypt hashes already cracked...
[*] Cracking descrypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=8qLTJwqG --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=1500 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking descrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=8qLTJwqG --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=1500 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1322   descrypt   des2_password     password          Wordlist
 1323   descrypt   des_password      password          Wordlist
 1324   descrypt   des_55            55                Incremental
 1325   descrypt   des_pot_55        55                Already Cracked/POT
 1327   md5crypt   md5_password      password          Wordlist
 1328   md5crypt   md52_password     password          Wordlist
 1329   md5crypt   md5_pot_password  password          Already Cracked/POT

[*] Checking bsdicrypt hashes already cracked...
[*] Cracking bsdicrypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=RShDcHzl --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=12400 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking bsdicrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=RShDcHzl --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=12400 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type  Username          Cracked Password  Method
 -----  ---------  --------          ----------------  ------
 1322   descrypt   des2_password     password          Wordlist
 1323   descrypt   des_password      password          Wordlist
 1324   descrypt   des_55            55                Incremental
 1325   descrypt   des_pot_55        55                Already Cracked/POT
 1327   md5crypt   md5_password      password          Wordlist
 1328   md5crypt   md52_password     password          Wordlist
 1329   md5crypt   md5_pot_password  password          Already Cracked/POT
 1330   bsdicrypt  bsdi_password     password          Wordlist

[*] Checking bcrypt hashes already cracked...
[*] Cracking bcrypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=wNHLTkTX --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=3200 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking bcrypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=wNHLTkTX --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=3200 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type  Username           Cracked Password  Method
 -----  ---------  --------           ----------------  ------
 1322   descrypt   des2_password      password          Wordlist
 1323   descrypt   des_password       password          Wordlist
 1324   descrypt   des_55             55                Incremental
 1325   descrypt   des_pot_55         55                Already Cracked/POT
 1327   md5crypt   md5_password       password          Wordlist
 1328   md5crypt   md52_password      password          Wordlist
 1329   md5crypt   md5_pot_password   password          Already Cracked/POT
 1330   bsdicrypt  bsdi_password      password          Wordlist
 1333   bcrypt     blowfish_password  password          Wordlist

[*] Checking sha256crypt hashes already cracked...
[*] Cracking sha256crypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=uNQu0c8S --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=7400 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking sha256crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=uNQu0c8S --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=7400 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type    Username           Cracked Password  Method
 -----  ---------    --------           ----------------  ------
 1322   descrypt     des2_password      password          Wordlist
 1323   descrypt     des_password       password          Wordlist
 1324   descrypt     des_55             55                Incremental
 1325   descrypt     des_pot_55         55                Already Cracked/POT
 1327   md5crypt     md5_password       password          Wordlist
 1328   md5crypt     md52_password      password          Wordlist
 1329   md5crypt     md5_pot_password   password          Already Cracked/POT
 1330   bsdicrypt    bsdi_password      password          Wordlist
 1331   sha256crypt  sha256_password    password          Wordlist
 1333   bcrypt       blowfish_password  password          Wordlist

[*] Checking sha512crypt hashes already cracked...
[*] Cracking sha512crypt hashes in incremental mode...
[*]    Cracking Command: /usr/bin/hashcat --session=0GST7Eb1 --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=1800 --increment --increment-max=4 --attack-mode=3 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf
nvmlDeviceGetFanSpeed(): Not Supported

[*] Cracking sha512crypt hashes in wordlist mode...
[*]    Cracking Command: /usr/bin/hashcat --session=0GST7Eb1 --logfile-disable --potfile-path=/root/.msf4/john.pot --hash-type=1800 --attack-mode=0 --runtime=60 /tmp/hashes_tmp20190531-28535-hi2lkf /tmp/jtrtmp20190531-28535-47c707
nvmlDeviceGetFanSpeed(): Not Supported

[+] Cracked Hashes
==============

 DB ID  Hash Type    Username           Cracked Password  Method
 -----  ---------    --------           ----------------  ------
 1322   descrypt     des2_password      password          Wordlist
 1323   descrypt     des_password       password          Wordlist
 1324   descrypt     des_55             55                Incremental
 1325   descrypt     des_pot_55         55                Already Cracked/POT
 1327   md5crypt     md5_password       password          Wordlist
 1328   md5crypt     md52_password      password          Wordlist
 1329   md5crypt     md5_pot_password   password          Already Cracked/POT
 1330   bsdicrypt    bsdi_password      password          Wordlist
 1331   sha256crypt  sha256_password    password          Wordlist
 1332   sha512crypt  sha512_password    password          Wordlist
 1333   bcrypt       blowfish_password  password          Wordlist

[*] Auxiliary module execution completed
resource (hashes_hashcat.rb)> creds
Credentials
===========

host  origin  service  public             private                                                                                             realm  private_type        JtR Format
----  ------  -------  ------             -------                                                                                             -----  ------------        ----------
                       md5_password       password                                                                                                   Password            
                       blowfish_password  $2a$05$bvIG6Nmid91Mu9RcmmWZfO5HJIMCT8riNW0hEp8f6/FuA2/mHZFpe                                               Nonreplayable hash  bf
                       des_pot_55         55                                                                                                         Password            
                       des_password       password                                                                                                   Password            
                       md52_password      $1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/                                                                         Nonreplayable hash  md5
                       sha256_password    password                                                                                                   Password            
                       bsdi_password      _J9..K0AyUubDrfOgO4s                                                                                       Nonreplayable hash  bsdi
                       sha512_password    $6$zWwwXKNj$gLAOoZCjcr8p/.VgV/FkGC3NX7BsXys3KHYePfuIGMNjY83dVxugPYlxVg/evpcVEJLT/rSwZcDMlVVf/bhf.1         Nonreplayable hash  sha512
                       bsdi_password      password                                                                                                   Password            
                       sha512_password    password                                                                                                   Password            
                       blowfish_password  password                                                                                                   Password            
                       des2_password      rEK1ecacw.7.c                                                                                              Nonreplayable hash  des
                       des_55             55                                                                                                         Password            
                       des2_password      password                                                                                                   Password            
                       md5_password       $1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/                                                                         Nonreplayable hash  md5
                       des_pot_55         fakeV6xlcXxRM                                                                                              Nonreplayable hash  des
                       des_password       rEK1ecacw.7.c                                                                                              Nonreplayable hash  des
                       md52_password      password                                                                                                   Password            
                       md5_pot_password   password                                                                                                   Password            
                       md5_pot_password   $1$O3JMY.Tw$AdLnLjQ/5jXF9.fakegHv/                                                                         Nonreplayable hash  md5
                       des_passphrase     qiyh4XPJGsOZ2MEAyLkfWqeQ                                                                                   Nonreplayable hash  des
                       des_55             rDpJV6xlcXxRM                                                                                              Nonreplayable hash  des
                       sha256_password    $5$MnfsQ4iN$ZMTppKN16y/tIsUYs/obHlhdP.Os80yXhTurpBMUbA5                                                    Nonreplayable hash  sha256

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Msfconsole Usage

Here is how the analyze/crack_linux auxiliary module looks in the msfconsole:

msf6 > use auxiliary/analyze/crack_linux

msf6 auxiliary(analyze/crack_linux) > show info

       Name: Password Cracker: Linux
     Module: auxiliary/analyze/crack_linux
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  theLightCosine <[email protected]>
  hdm <[email protected]>
  h00die

Available actions:
  Name     Description
  ----     -----------
  hashcat  Use Hashcat
  john     Use John the Ripper

Check supported:
  No

Basic options:
  Name                  Current Setting  Required  Description
  ----                  ---------------  --------  -----------
  BLOWFISH              false            no        Include BLOWFISH hashes (Very Slow)
  BSDI                  true             no        Include BSDI hashes
  CONFIG                                 no        The path to a John config file to use instead of the default
  CRACKER_PATH                           no        The absolute path to the cracker executable
  CUSTOM_WORDLIST                        no        The path to an optional custom wordlist
  DES                   true             no        Indlude DES hashes
  FORK                  1                no        Forks for John the Ripper to use
  INCREMENTAL           true             no        Run in incremental mode
  ITERATION_TIMEOUT                      no        The max-run-time for each iteration of cracking
  KORELOGIC             false            no        Apply the KoreLogic rules to John the Ripper Wordlist Mode(slower)
  MD5                   true             no        Include MD5 hashes
  MUTATE                false            no        Apply common mutations to the Wordlist (SLOW)
  POT                                    no        The path to a John POT file to use instead of the default
  SHA256                false            no        Include SHA256 hashes (Very Slow)
  SHA512                false            no        Include SHA512 hashes (Very Slow)
  USE_CREDS             true             no        Use existing credential data saved in the database
  USE_DB_INFO           true             no        Use looted database schema info to seed the wordlist
  USE_DEFAULT_WORDLIST  true             no        Use the default metasploit wordlist
  USE_HOSTNAMES         true             no        Seed the wordlist with hostnames from the workspace
  USE_ROOT_WORDS        true             no        Use the Common Root Words Wordlist
  WORDLIST              true             no        Run in wordlist mode

Description:
  This module uses John the Ripper or Hashcat to identify weak 
  passwords that have been acquired from unshadowed passwd files from 
  Unix/Linux systems. The module will only crack MD5, BSDi and DES 
  implementations by default. However, it can also crack Blowfish and 
  SHA(256/512), but it is much slower.

Module Options

This is a complete list of options available in the analyze/crack_linux auxiliary module:

msf6 auxiliary(analyze/crack_linux) > show options

Module options (auxiliary/analyze/crack_linux):

   Name                  Current Setting  Required  Description
   ----                  ---------------  --------  -----------
   BLOWFISH              false            no        Include BLOWFISH hashes (Very Slow)
   BSDI                  true             no        Include BSDI hashes
   CONFIG                                 no        The path to a John config file to use instead of the default
   CRACKER_PATH                           no        The absolute path to the cracker executable
   CUSTOM_WORDLIST                        no        The path to an optional custom wordlist
   DES                   true             no        Indlude DES hashes
   FORK                  1                no        Forks for John the Ripper to use
   INCREMENTAL           true             no        Run in incremental mode
   ITERATION_TIMEOUT                      no        The max-run-time for each iteration of cracking
   KORELOGIC             false            no        Apply the KoreLogic rules to John the Ripper Wordlist Mode(slower)
   MD5                   true             no        Include MD5 hashes
   MUTATE                false            no        Apply common mutations to the Wordlist (SLOW)
   POT                                    no        The path to a John POT file to use instead of the default
   SHA256                false            no        Include SHA256 hashes (Very Slow)
   SHA512                false            no        Include SHA512 hashes (Very Slow)
   USE_CREDS             true             no        Use existing credential data saved in the database
   USE_DB_INFO           true             no        Use looted database schema info to seed the wordlist
   USE_DEFAULT_WORDLIST  true             no        Use the default metasploit wordlist
   USE_HOSTNAMES         true             no        Seed the wordlist with hostnames from the workspace
   USE_ROOT_WORDS        true             no        Use the Common Root Words Wordlist
   WORDLIST              true             no        Run in wordlist mode

Auxiliary action:

   Name  Description
   ----  -----------
   john  Use John the Ripper

Advanced Options

Here is a complete list of advanced options supported by the analyze/crack_linux auxiliary module:

msf6 auxiliary(analyze/crack_linux) > show advanced

Module advanced options (auxiliary/analyze/crack_linux):

   Name             Current Setting  Required  Description
   ----             ---------------  --------  -----------
   DeleteTempFiles  true             no        Delete temporary wordlist and hash files
   OptimizeKernel   true             no        Utilize Optimized Kernels in Hashcat
   ShowCommand      true             no        Print the cracker command being used
   VERBOSE          false            no        Enable detailed status messages
   WORKSPACE                         no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the analyze/crack_linux module can do:

msf6 auxiliary(analyze/crack_linux) > show actions

Auxiliary actions:

   Name     Description
   ----     -----------
   hashcat  Use Hashcat
   john     Use John the Ripper

Evasion Options

Here is the full list of possible evasion options supported by the analyze/crack_linux auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(analyze/crack_linux) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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Error Messages

This module may fail with the following error messages:

Error Messages

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

This module cannot run without a database connected. Use db_connect to connect to a database.

Here is a relevant code snippet related to the "This module cannot run without a database connected. Use db_connect to connect to a database." error message:

141:	    cracker.hash_path, hashes = hash_file(hashes_regex)
142:	
143:	    # generate our wordlist and close the file handle.
144:	    wordlist = wordlist_file
145:	    unless wordlist
146:	      print_error('This module cannot run without a database connected. Use db_connect to connect to a database.')
147:	      return
148:	    end
149:	
150:	    wordlist.close
151:	    print_status "Wordlist file written out to #{wordlist.path}"

No applicable hashes in database to crack

Here is a relevant code snippet related to the "No applicable hashes in database to crack" error message:

251:	      wrote_hash = true
252:	    end
253:	    hashlist.close
254:	    unless wrote_hash # check if we wrote anything and bail early if we didn't
255:	      hashlist.delete
256:	      fail_with Failure::NotFound, 'No applicable hashes in database to crack'
257:	    end
258:	    print_status "Hashes Written out to #{hashlist.path}"
259:	    return hashlist.path, hashes
260:	  end
261:	end

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See Also

Check also the following modules related to this module:

Authors

  • theLightCosine
  • hdm
  • h00die

Version

This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.

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